Solve Problems 1.4 and 1.5 using the alignment diagram (Fig. 1.7).

Problem 1.4

Along a railroad cut, a bed has an apparent dip of 20° in a direction of N62°W. The bed strikes N67°E. Using orthographic projection, find the true dip.

Problem 1.5

A fault has the following attitude: 080°, 48°S. Using orthographic projection, determine the apparent dip of this fault in a vertical cross section striking 295°.

True dip 89 85 70 60 50% 40 30 20 Apparent dip 89 85 80 70 60 50 40 30 20% 10 5 1 30 10- Angle between strike and apparent dip -30 -20 -10